On this day: April 16

2013: Pat Summerall, the football player turned legendary play-by-play announcer, dies of cardiac arrest at the age of 82 in Dallas, Texas. He was best known as a broadcaster for teaming with former NFL coach John Madden for 22 years. Summerall became the voice of the NFL in the 1970s and 1980s, calling most of the league's signature games, and worked more than 10 Super Bowls. As a player, he was a placekicker and played 10 seasons for the Chicago Cardinals and New York Giants from 1952 to 1961, scoring more than 500 points as an NFL player.

LSD's creator drops acid (accidentally) for the first time, Martin Luther King writes his "Letter from Birmingham Jail," The Rolling Stones release their debut album, and tragedy strikes Virginia Tech, all on this day.